Spur Gears - Norfolk Bearings and Supply Company, Inc.
Spur Gears - Norfolk Bearings and Supply Company, Inc.
Spur Gears - Norfolk Bearings and Supply Company, Inc.
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A<br />
<strong>Spur</strong> <strong>Gears</strong><br />
Approximate Horsepower <strong>and</strong> Torque* Ratings<br />
For Class I Service (Service Factor = 1.0)<br />
5 DIAMETRAL PITCH STEEL 20° PRESSURE ANGLE 2-1/2" FACE REFERENCE PAGE 46.<br />
No. 25 RPM 50 RPM 100 RPM 200 RPM 300 RPM 600 RPM 900 RPM 1200 RPM 1800 RPM 3600 RPM<br />
Teeth H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque<br />
12 1.14 2865 2.22 2794 4.22 2662 7.71 2431 10.65 2237 17.19 1805 21.61 1513 24.80 1302 29.09 1019<br />
14 1.49 3756 2.89 3647 5.47 3449 9.87 3110 13.48 2832 21.25 2233 26.31 1843 29.87 1569 34.53 1209<br />
15 1.67 4198 3.23 4069 6.08 3833 10.90 3435 14.81 3112 23.11 2427 28.41 1990 32.09 1686 36.87 1291<br />
16 1.81 4565 3.50 4416 6.58 4146 11.72 3693 15.85 3329 24.47 2570 29.89 2093 33.61 1765<br />
18 2.12 5332 4.08 5138 7.60 4789 13.38 4216 17.92 3766 27.15 2852 32.77 2295 36.56 1920<br />
20 2.44 6141 4.68 5894 8.66 5456 15.07 4750 20.02 4205 29.79 3129 35.58 2492 39.41 2070<br />
5 DIAMETRAL PITCH CAST IRON 20° PRESSURE ANGLE 2-1/2" FACE REFERENCE PAGE 46.<br />
No. 25 RPM 50 RPM 100 RPM 200 RPM 300 RPM 600 RPM 900 RPM 1200 RPM 1800 RPM 3600 RPM<br />
Teeth H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque<br />
24 1.82 4599 3.48 4381 6.35 4002 10.82 3411 14.15 2972 20.41 2144 23.95 1677<br />
25 1.91 4826 3.64 4588 6.63 4177 11.24 3542 14.64 3075 20.97 2203 24.51 1716<br />
28 2.21 5571 4.18 5267 7.54 4750 12.60 3970 16.23 3410 22.81 2396 26.37 1847<br />
30 2.40 6050 4.52 5700 8.10 5108 13.42 4230 17.18 3609 23.86 2506 27.41 1920<br />
35 2.97 7477 5.54 6982 9.78 6164 15.85 4995 19.98 4199 27.04 2840<br />
40 3.47 8737 6.42 8087 11.17 7040 17.75 5593 22.08 4639 29.21 3068<br />
45 3.98 10040 7.31 9216 12.56 7916 19.59 6174 24.09 5060 31.26 3284<br />
50 4.38 11046 7.98 10056 13.53 8528 20.75 6540 25.25 5304 32.22 3384<br />
60 5.32 13399 9.53 12008 15.78 9944 23.48 7400 28.05 5892 34.81 3657<br />
70 6.27 15794 11.06 13945 17.93 11300 26.00 8192 30.58 6425<br />
80 7.23 18229 12.59 15869 20.00 12605 28.34 8932 32.92 6916<br />
100 8.71 21969 14.78 18630 22.67 14288 30.92 9745<br />
110 9.68 24409 16.22 20449 24.50 15439 32.88 10362<br />
120 10.38 26168 17.19 21669 25.58 16125 33.85 10666<br />
140 11.70 29508 18.97 23910 27.50 17334 35.49 11182<br />
160 13.30 33526 21.13 26631 29.94 18870 37.83 11921<br />
180 14.49 36534 22.61 28495 31.40 19787 38.97 12281<br />
Ratings are based on strength calculation. Basic static strength rating, or for h<strong>and</strong> operation of above gears is approximately 3 times the 100 RPM rating.<br />
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.<br />
They should be used for interpolation purposes only.<br />
*Torque Ratings (Lb. Ins.).<br />
Gear Gauge Set<br />
14-1/2° <strong>and</strong> 20° Pressure Angles<br />
This h<strong>and</strong>y, steel gear gauge set consists of 16 leaves — 24 gauges — to<br />
measure both 14-1/2° <strong>and</strong> 20° Pressure Angle tooth form, in diametral pitch<br />
sizes 64, 48, 32, 24, 20, 16, 12, 10, 8, 6, 5 <strong>and</strong> 4. Pitch sizes 8, 6, 5 <strong>and</strong> 4 both<br />
14-1/2° <strong>and</strong> 20° are cut on individual leaves. Pitch sizes 64 through 10 inclusive,<br />
have both 14-1/2° <strong>and</strong> 20° Pressure Angles on a single leaf.<br />
SOLD ONLY AS A COMPLETE SET<br />
ORDER BY CATALOG NUMBER OR ITEM CODE<br />
Catalog Number Item Code<br />
Gear Gauge 06000<br />
62 Boston Gear 800-825-6544 P-1930-BG 04/10